A post pulling mechanism

Abstract

The utility model discloses a kind of stand pulling mechanism, comprising: support, by hydraulic connection frame is installed in external crane, bottom is equipped with hydraulic support frame;Sliding block, slidingly connected in support, top is fixedly connected with external crane driving arm;Positioning frame, detachably connected to the side surface of sliding block, bottom is fixed with positioning rod;Swing rod, by swing axle and positioning rod hinged, one end is connected with the taper sleeve of conical rod by lifting chain, conical rod and taper sleeve can be inserted into stand;Pile driver, fixed in positioning frame and act on the other end of swing rod, can drive swing rod vibration;Positioning ring, fixed sleeve in conical rod, annular hinged multiple bending clamps, its hinged point to bottom end distance is greater than to top end distance, the utility model reduces the friction between stand and ground by vibration transmission, realizes stable clamping to stand in combination with lever principle, can easily complete nondestructive pulling pile, and can also ensure operation safety and reliability.

Description

Technical fields:

[0001] This utility model relates to the field of pile extraction technology, specifically to a column pile extraction mechanism. Background technology:

[0002] With the continuous advancement of urban infrastructure construction, road guardrails, as an important facility for traffic safety, are being installed and removed more and more frequently. Traditional methods of removing guardrail posts often rely on manual labor or simple mechanical equipment, which is not only inefficient but also prone to damaging the guardrail posts, even affecting their reuse. Utility model content:

[0003] Therefore, this utility model provides a column extraction mechanism to overcome the problems of the prior art.

[0004] This utility model is implemented by the following technical solution:

[0005] A column extraction mechanism includes: a support frame, mounted on an external crane via a hydraulic connecting frame, with a hydraulic support frame at the bottom; a sliding block, slidably connected within the support frame, and fixedly connected at the top to the drive arm of the external crane; a positioning frame, detachably connected to the side of the sliding block, with a positioning rod fixed at the bottom; a swing rod, hinged to the positioning rod via a swing shaft, one end of which is connected to a tapered rod with a tapered sleeve via a chain, the tapered rod and tapered sleeve being able to be inserted into a column; a pile driver, fixed to the positioning frame and acting on the other end of the swing rod, capable of driving the swing rod to vibrate; a positioning ring, fixedly sleeved on the tapered rod, with multiple bent clamps annularly hinged, the distance from the hinge point to the bottom being greater than the distance to the top; and a sliding sleeve, slidably sleeved on the tapered rod and located above the positioning ring, with an inverted conical cross-section, the bottom of the bent clamps being able to contact the column and the top being able to contact the sliding sleeve.

[0006] Preferably, there are four bending clamps.

[0007] Preferably, the hydraulic connection frame includes a connection part for connecting to an external crane and a hydraulic drive part for adjusting the drive bracket.

[0008] Preferably, the positioning frame and the sliding block are detachably connected by bolts or clips.

[0009] Preferably, the pile driver is a hydraulic pile driver, a pneumatic pile driver, or an electric pile driver.

[0010] Preferably, the sliding block and the bracket are slidably connected by the side end of the sliding block being slidably embedded into the inner groove of the bracket.

[0011] Preferably, a damping device is provided at the hinge joint between the bending clamp and the positioning ring.

[0012] Preferably, the tapered rod and tapered sleeve are made of high-strength alloy steel, and the outer surface of the tapered sleeve is provided with an anti-slip structure.

[0013] The advantages of this utility model are: by transmitting vibration to reduce the friction between the column and the ground, and by combining the lever principle to achieve stable clamping of the column, it can easily complete the non-destructive pile extraction and ensure safe and reliable operation. Attached image description:

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure described in this utility model;

[0016] Figure 2 This is a partial structural diagram of the present invention.

[0017] In the diagram: 1. Bracket; 2. Sliding block; 3. Positioning frame; 4. Positioning rod; 5. Swing rod; 6. Piling device; 7. Conical rod; 8. Conical sleeve; 9. Clamping assembly; 10. Column; 11. Positioning ring; 12. Bending clamp; 13. Sliding sleeve. Detailed implementation method:

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 , Figure 2 As shown, a column extraction mechanism includes a support 1, which is mounted on an external crane via a hydraulic connecting frame. The hydraulic connecting frame includes a connecting part for connecting to the external crane and a hydraulic drive part for adjusting the support 1, which can realize fine adjustment of the angle and position of the support 1. A hydraulic support frame is provided at the bottom of the support 1, which can provide stable longitudinal support for the support 1 during operation and ensure the overall stability of the mechanism.

[0020] The sliding block 2 is slidably connected inside the bracket 1. Specifically, the sliding block 2 is slidably embedded into the inner groove of the bracket 1 by its side end. This structural design makes the sliding of the sliding block 2 more stable and reliable. The top of the sliding block 2 is fixedly connected to the external crane drive arm and can slide up and down along the bracket 1 under the drive of the external crane.

[0021] The positioning frame 3 is detachably connected to the side of the sliding block 2 by bolts or clips. This detachable connection method facilitates the installation, disassembly and maintenance of the positioning frame 3. The bottom of the positioning frame 3 is fixedly connected to the positioning rod 4, which provides support for the installation of subsequent components.

[0022] The swing rod 5 is hinged to the positioning rod 4 via the swing shaft, allowing it to swing flexibly around the swing shaft. One end of the swing rod 5 is connected to a cone rod 7 via a hanging chain. A cone sleeve 8 is fitted on the cone rod 7. The cone rod 7 and the cone sleeve 8 can be inserted together into the column 10 to be removed. The cone rod 7 and the cone sleeve 8 are made of high-strength alloy steel, which has high strength and wear resistance. The outer surface of the cone sleeve 8 is provided with an anti-slip structure, which can enhance the friction with the inner wall of the column 10.

[0023] The pile driver 6 is fixed on the positioning frame 3 and acts on the other end of the swing rod 5. The pile driver 6 can be a hydraulic pile driver, a pneumatic pile driver or an electric pile driver, which can drive the swing rod 5 to vibrate.

[0024] The positioning ring 11 is fixedly sleeved on the cone rod 7. Multiple bending clamps 12 are annularly hinged on the positioning ring 11. In this embodiment, four are preferred. The distance from the hinge point to the bottom of the bending clamp 12 is greater than the distance to its top. A damping device is provided at the hinge point between the bending clamp 12 and the positioning ring 11 to adjust the resistance of the bending clamp 12 swing.

[0025] The sliding sleeve 13 is slidably mounted on the tapered rod 7 and located at the upper end of the positioning ring 11. The cross-section of the sliding sleeve 13 is an inverted cone shape. The bottom of the bent clamp 12 can contact the column 10, and the top can contact the sliding sleeve 13.

[0026] Actual work process:

[0027] When performing the column extraction operation, the entire column extraction mechanism is first moved to the position of the column to be extracted 10 by an external crane, and the hydraulic support frame at the bottom of the support 1 is operated to make the support 1 stably supported on the ground.

[0028] Next, the external crane is controlled to drive the sliding block 2 to slide down along the bracket 1, which in turn moves the positioning frame 3, positioning rod 4, swing rod 5 and other components down, inserting the cone rod 7 and the cone sleeve 8 fitted on it into the column 10.

[0029] At this time, the sliding sleeve 13 slides down along the cone rod 7 due to gravity. Since the cross section of the sliding sleeve 13 is an inverted cone, its outer side will contact the top of the bending clamp 12 and force the top of the bending clamp 12 to swing away from the cone rod 7. According to the lever principle, since the distance from the hinge point of the bending clamp 12 and the positioning ring 11 to its bottom is greater than the distance to the top, the bottom of the bending clamp 12 will swing towards the cone rod 7, thereby making close contact with the outer side of the column 10 and clamping the column 10.

[0030] Then, the pile driver 6 is started. The driving end of the pile driver 6 acts on the other end of the swing rod 5, causing the swing rod 5 to vibrate around the swing axis connected to the positioning rod 4. This vibration is transmitted to the cone rod 7 and the cone sleeve 8 through the suspension chain, and then to the column 10. Under the action of vibration, the friction between the column 10 and the ground is reduced.

[0031] Finally, the external crane is controlled to drive the sliding block 2 to slide upward along the bracket 1. Through the positioning frame 3, positioning rod 4, swing rod 5, lifting chain and other components, the cone rod 7, cone sleeve 8 and the clamped column 10 are driven to move upward, so as to remove the column 10.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A column-pulling mechanism, characterized in that, include: The bracket (1) is installed on an external crane via a hydraulic connecting frame, and a hydraulic support frame is provided at the bottom; The sliding block (2) is slidably connected inside the bracket (1), and its top is fixedly connected to the external crane drive arm; The positioning frame (3) is detachably connected to the side of the sliding block (2), and the bottom is fixed with a positioning rod (4); The swing rod (5) is hinged to the positioning rod (4) via the swing shaft, and one end is connected to the cone rod (7) with the cone sleeve (8) via a hanging chain. The cone rod (7) and the cone sleeve (8) can be inserted into the column (10). The pile driver (6) is fixed to the positioning frame (3) and acts on the other end of the swing rod (5), which can drive the swing rod (5) to vibrate; Positioning ring (11) is fixedly sleeved on tapered rod (7) and has multiple bent clamps (12) hinged in a ring. The distance from the hinge point to the bottom end is greater than the distance to the top end. The sliding sleeve (13) is attached to the tapered rod (7) and located at the upper end of the positioning ring (11). The cross section is an inverted cone shape. The bottom of the bent clamp (12) can contact the column (10) and the top can contact the sliding sleeve (13).

2. The column extraction mechanism according to claim 1, characterized in that, There are four bending clamps (12).

3. The column extraction mechanism according to claim 1, characterized in that, The hydraulic connection frame includes a connection part for connecting to an external crane and a hydraulic drive part for adjusting the drive bracket (1).

4. The column extraction mechanism according to claim 1, characterized in that, The positioning frame (3) and the sliding block (2) are detachably connected by bolts or buckles.

5. A column extraction mechanism according to claim 1, characterized in that, The pile driver (6) is a hydraulic pile driver, a pneumatic pile driver, or an electric pile driver.

6. A column extraction mechanism according to claim 1, characterized in that, The sliding block (2) and the bracket (1) are slidably connected by the side end of the sliding block (2) being slidably embedded into the inner groove of the bracket (1).

7. A column extraction mechanism according to claim 1, characterized in that, A damping device is provided at the hinge of the bending clamp (12) and the positioning ring (11).

8. A column extraction mechanism according to claim 1, characterized in that, The cone rod (7) and the cone sleeve (8) are made of high-strength alloy steel, and the outer surface of the cone sleeve (8) is provided with an anti-slip structure.

Images